"I will win this," he told reporters. "I ain't begging for nothing. I don't beg my woman, I am not begging for this."

Beavers, 78, also called himself a "hero" for "standing and fighting the government."

Beavers Rails Against Government's "Gastapo Tactics"

Cook County Commissioner faces 12 years in prison after being found guilty Thursday afternoon of tax evasion. (Published Thursday, Mar 21, 2013)

Prosecutors asked for a sentence closer to two years for withdrawing hundreds of thousands of dollars from his campaign fund over a three-year period. He contended the money amounted to nothing more than loans, but the government said it was unreported income, which he deliberately hid from the IRS.

Beavers Trial Ends Without Commissioner on Stand

During the trial, Beavers' defense team pointed to checks he had written back to the campaign from his personal account as evidence that the "loaned" campaign funds were being paid back.

He exited the federal courthouse after the trial claiming the government's case against him was nothing more than retaliation for his refusal to wear a wire against his colleagues, Commissioner John Daley in particular, in a wider probe of Cook County government.

Beavers was indicted in February 2012 of failing to report thousands of dollars in income, taken from his campaign funds. He also was accused of converting $68,000 in campaign money to beef up his aldermanic pension, and failing to properly account for thousands of dollars in county expense funds.

During the trial, the government said Beavers was a prolific gambler and used campaign money to feed his habit. Beavers and his attorneys said prosecutors twisted the evidence.